/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-acceleration/multivar_1-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 12:11:37,397 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 12:11:37,399 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 12:11:37,421 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 12:11:37,421 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 12:11:37,422 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 12:11:37,423 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 12:11:37,424 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 12:11:37,425 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 12:11:37,426 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 12:11:37,426 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 12:11:37,427 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 12:11:37,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 12:11:37,428 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 12:11:37,429 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 12:11:37,429 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 12:11:37,430 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 12:11:37,430 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 12:11:37,431 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 12:11:37,432 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 12:11:37,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 12:11:37,434 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 12:11:37,435 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 12:11:37,435 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 12:11:37,437 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-02 12:11:37,437 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-02 12:11:37,437 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-02 12:11:37,438 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-02 12:11:37,438 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-02 12:11:37,439 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-02 12:11:37,439 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-02 12:11:37,439 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-02 12:11:37,440 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-02 12:11:37,440 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-02 12:11:37,441 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-02 12:11:37,441 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-02 12:11:37,441 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-02 12:11:37,442 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-02 12:11:37,442 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 12:11:37,442 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 12:11:37,443 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 12:11:37,444 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-05-02 12:11:37,458 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 12:11:37,458 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 12:11:37,459 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-02 12:11:37,459 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-02 12:11:37,460 INFO L138 SettingsManager]: * Use SBE=true [2021-05-02 12:11:37,460 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 12:11:37,460 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 12:11:37,460 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 12:11:37,460 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 12:11:37,460 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 12:11:37,476 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 12:11:37,476 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 12:11:37,476 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 12:11:37,476 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 12:11:37,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 12:11:37,477 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 12:11:37,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 12:11:37,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 12:11:37,477 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 12:11:37,477 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 12:11:37,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 12:11:37,477 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 12:11:37,478 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-02 12:11:37,478 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-02 12:11:37,478 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 12:11:37,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-02 12:11:37,478 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 12:11:37,478 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-02 12:11:37,478 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 12:11:37,690 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 12:11:37,703 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 12:11:37,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 12:11:37,706 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 12:11:37,706 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 12:11:37,706 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/multivar_1-2.c [2021-05-02 12:11:37,765 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b72531b2/ceab2f703c81429b981a55174c8f9d5b/FLAGb48e66957 [2021-05-02 12:11:38,103 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 12:11:38,103 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/multivar_1-2.c [2021-05-02 12:11:38,107 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b72531b2/ceab2f703c81429b981a55174c8f9d5b/FLAGb48e66957 [2021-05-02 12:11:38,119 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b72531b2/ceab2f703c81429b981a55174c8f9d5b [2021-05-02 12:11:38,121 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 12:11:38,122 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 12:11:38,126 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 12:11:38,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 12:11:38,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 12:11:38,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 12:11:38" (1/1) ... [2021-05-02 12:11:38,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12e75900 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:11:38, skipping insertion in model container [2021-05-02 12:11:38,130 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 12:11:38" (1/1) ... [2021-05-02 12:11:38,135 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 12:11:38,146 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 12:11:38,253 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/multivar_1-2.c[374,387] [2021-05-02 12:11:38,260 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 12:11:38,266 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 12:11:38,304 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/multivar_1-2.c[374,387] [2021-05-02 12:11:38,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 12:11:38,317 INFO L208 MainTranslator]: Completed translation [2021-05-02 12:11:38,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:11:38 WrapperNode [2021-05-02 12:11:38,318 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 12:11:38,319 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 12:11:38,319 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 12:11:38,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 12:11:38,329 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:11:38" (1/1) ... [2021-05-02 12:11:38,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:11:38" (1/1) ... [2021-05-02 12:11:38,336 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:11:38" (1/1) ... [2021-05-02 12:11:38,336 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:11:38" (1/1) ... [2021-05-02 12:11:38,343 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:11:38" (1/1) ... [2021-05-02 12:11:38,351 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:11:38" (1/1) ... [2021-05-02 12:11:38,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:11:38" (1/1) ... [2021-05-02 12:11:38,355 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 12:11:38,357 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 12:11:38,357 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 12:11:38,357 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 12:11:38,357 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:11:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 12:11:38,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 12:11:38,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 12:11:38,419 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 12:11:38,419 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 12:11:38,420 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 12:11:38,420 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 12:11:38,420 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 12:11:38,420 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 12:11:38,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 12:11:38,421 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-05-02 12:11:38,421 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 12:11:38,421 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 12:11:38,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 12:11:38,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 12:11:38,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 12:11:38,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 12:11:38,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 12:11:38,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 12:11:38,609 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 12:11:38,609 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 12:11:38,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 12:11:38 BoogieIcfgContainer [2021-05-02 12:11:38,610 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 12:11:38,611 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 12:11:38,611 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 12:11:38,613 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 12:11:38,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 12:11:38" (1/3) ... [2021-05-02 12:11:38,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49fc2464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 12:11:38, skipping insertion in model container [2021-05-02 12:11:38,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:11:38" (2/3) ... [2021-05-02 12:11:38,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49fc2464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 12:11:38, skipping insertion in model container [2021-05-02 12:11:38,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 12:11:38" (3/3) ... [2021-05-02 12:11:38,614 INFO L111 eAbstractionObserver]: Analyzing ICFG multivar_1-2.c [2021-05-02 12:11:38,619 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-02 12:11:38,621 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 12:11:38,632 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 12:11:38,656 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 12:11:38,656 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 12:11:38,656 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-02 12:11:38,656 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 12:11:38,656 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 12:11:38,657 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 12:11:38,657 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 12:11:38,657 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 12:11:38,668 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 12:11:38,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 12:11:38,670 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:11:38,671 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:11:38,671 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:11:38,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:11:38,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1301225826, now seen corresponding path program 1 times [2021-05-02 12:11:38,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:11:38,683 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123801293] [2021-05-02 12:11:38,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:11:38,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-02 12:11:38,754 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-02 12:11:38,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-02 12:11:38,778 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-02 12:11:38,799 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-05-02 12:11:38,799 INFO L624 BasicCegarLoop]: Counterexample might be feasible [2021-05-02 12:11:38,799 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 12:11:38,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 12:11:38 BoogieIcfgContainer [2021-05-02 12:11:38,821 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 12:11:38,823 INFO L168 Benchmark]: Toolchain (without parser) took 699.32 ms. Allocated memory is still 202.4 MB. Free memory was 167.0 MB in the beginning and 157.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.4 MB. Max. memory is 8.0 GB. [2021-05-02 12:11:38,824 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 202.4 MB. Free memory is still 183.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 12:11:38,825 INFO L168 Benchmark]: CACSL2BoogieTranslator took 192.55 ms. Allocated memory is still 202.4 MB. Free memory was 166.8 MB in the beginning and 185.8 MB in the end (delta: -19.0 MB). Peak memory consumption was 12.5 MB. Max. memory is 8.0 GB. [2021-05-02 12:11:38,826 INFO L168 Benchmark]: Boogie Preprocessor took 36.65 ms. Allocated memory is still 202.4 MB. Free memory was 185.4 MB in the beginning and 184.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 12:11:38,827 INFO L168 Benchmark]: RCFGBuilder took 253.56 ms. Allocated memory is still 202.4 MB. Free memory was 184.0 MB in the beginning and 171.5 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-05-02 12:11:38,827 INFO L168 Benchmark]: TraceAbstraction took 209.59 ms. Allocated memory is still 202.4 MB. Free memory was 171.1 MB in the beginning and 157.4 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-05-02 12:11:38,833 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 202.4 MB. Free memory is still 183.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 192.55 ms. Allocated memory is still 202.4 MB. Free memory was 166.8 MB in the beginning and 185.8 MB in the end (delta: -19.0 MB). Peak memory consumption was 12.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 36.65 ms. Allocated memory is still 202.4 MB. Free memory was 185.4 MB in the beginning and 184.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 253.56 ms. Allocated memory is still 202.4 MB. Free memory was 184.0 MB in the beginning and 171.5 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 209.59 ms. Allocated memory is still 202.4 MB. Free memory was 171.1 MB in the beginning and 157.4 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L14] unsigned int x = __VERIFIER_nondet_uint(); [L15] unsigned int y = x + 1; VAL [x=4294967295, y=0] [L17] COND FALSE !(x < 1024) VAL [x=4294967295, y=0] [L22] CALL __VERIFIER_assert(x == y) VAL [\old(cond)=0] [L7] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L8] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 145.5ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 4.7ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 4.6ms SsaConstructionTime, 30.6ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...